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-rw-r--r--src/journal/journal-vacuum.c91
1 files changed, 86 insertions, 5 deletions
diff --git a/src/journal/journal-vacuum.c b/src/journal/journal-vacuum.c
index ac16bdfcfd..22c9cfcd52 100644
--- a/src/journal/journal-vacuum.c
+++ b/src/journal/journal-vacuum.c
@@ -25,6 +25,10 @@
#include <sys/statvfs.h>
#include <unistd.h>
+#ifdef HAVE_XATTR
+#include <attr/xattr.h>
+#endif
+
#include "journal-def.h"
#include "journal-file.h"
#include "journal-vacuum.h"
@@ -68,18 +72,89 @@ static int vacuum_compare(const void *_a, const void *_b) {
return strcmp(a->filename, b->filename);
}
-int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free) {
+static void patch_realtime(
+ const char *dir,
+ const char *fn,
+ const struct stat *st,
+ unsigned long long *realtime) {
+
+ usec_t x;
+
+#ifdef HAVE_XATTR
+ uint64_t crtime;
+ _cleanup_free_ const char *path = NULL;
+#endif
+
+ /* The timestamp was determined by the file name, but let's
+ * see if the file might actually be older than the file name
+ * suggested... */
+
+ assert(dir);
+ assert(fn);
+ assert(st);
+ assert(realtime);
+
+ x = timespec_load(&st->st_ctim);
+ if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ *realtime = x;
+
+ x = timespec_load(&st->st_atim);
+ if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ *realtime = x;
+
+ x = timespec_load(&st->st_mtim);
+ if (x > 0 && x != (usec_t) -1 && x < *realtime)
+ *realtime = x;
+
+#ifdef HAVE_XATTR
+ /* Let's read the original creation time, if possible. Ideally
+ * we'd just query the creation time the FS might provide, but
+ * unfortunately there's currently no sane API to query
+ * it. Hence let's implement this manually... */
+
+ /* Unfortunately there is is not fgetxattrat(), so we need to
+ * go via path here. :-( */
+
+ path = strjoin(dir, "/", fn, NULL);
+ if (!path)
+ return;
+
+ if (getxattr(path, "user.crtime_usec", &crtime, sizeof(crtime)) == sizeof(crtime)) {
+ crtime = le64toh(crtime);
+
+ if (crtime > 0 && crtime != (uint64_t) -1 && crtime < *realtime)
+ *realtime = crtime;
+ }
+#endif
+}
+
+int journal_directory_vacuum(
+ const char *directory,
+ uint64_t max_use,
+ uint64_t min_free,
+ usec_t max_retention_usec,
+ usec_t *oldest_usec) {
+
DIR *d;
int r = 0;
struct vacuum_info *list = NULL;
unsigned n_list = 0, n_allocated = 0, i;
uint64_t sum = 0;
+ usec_t retention_limit = 0;
assert(directory);
- if (max_use <= 0)
+ if (max_use <= 0 && min_free <= 0 && max_retention_usec <= 0)
return 0;
+ if (max_retention_usec > 0) {
+ retention_limit = now(CLOCK_REALTIME);
+ if (retention_limit > max_retention_usec)
+ retention_limit -= max_retention_usec;
+ else
+ max_retention_usec = retention_limit = 0;
+ }
+
d = opendir(directory);
if (!d)
return -errno;
@@ -170,6 +245,8 @@ int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t m
} else
continue;
+ patch_realtime(directory, de->d_name, &st, &realtime);
+
if (n_list >= n_allocated) {
struct vacuum_info *j;
@@ -199,7 +276,7 @@ int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t m
if (n_list > 0)
qsort(list, n_list, sizeof(struct vacuum_info), vacuum_compare);
- for(i = 0; i < n_list; i++) {
+ for (i = 0; i < n_list; i++) {
struct statvfs ss;
if (fstatvfs(dirfd(d), &ss) < 0) {
@@ -207,8 +284,9 @@ int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t m
goto finish;
}
- if (sum <= max_use &&
- (uint64_t) ss.f_bavail * (uint64_t) ss.f_bsize >= min_free)
+ if ((max_retention_usec <= 0 || list[i].realtime >= retention_limit) &&
+ (max_use <= 0 || sum <= max_use) &&
+ (min_free <= 0 || (uint64_t) ss.f_bavail * (uint64_t) ss.f_bsize >= min_free))
break;
if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
@@ -218,6 +296,9 @@ int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t m
log_warning("Failed to delete %s/%s: %m", directory, list[i].filename);
}
+ if (oldest_usec && i < n_list && (*oldest_usec == 0 || list[i].realtime < *oldest_usec))
+ *oldest_usec = list[i].realtime;
+
finish:
for (i = 0; i < n_list; i++)
free(list[i].filename);